| Primary satellite | Secondary satellite |
| Name | Cosmos 1553 Rocket | deb NNS 20 |
| Spacetrack catalog number | 14974 | 15764 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jul 14 05:46 | 2025 Jul 14 03:28 |
| Time of closest approach (UTC) | 2024 Jun 22 07:21:29.872 |
| Minimum distance | 3153.564 km |
| Height difference | -37.605 km |
| Relative speed | 14.756 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 33.5°S, 10.0°E |
| Height | 973 km |
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